Cell Phone Charging - Interesting Find - Electronic Circuits Projects Diagrams Free

klm · 23rd December 2006, 02:12 AM

Fellow Engineers,

I came across this interesting article across the internet and I personally think its completely false in this day and age. Please share your thoughts and lets have an interesting conversation here:

http://www.gizmodo.com/gadgets/cellp...ght-223865.php

Looking forward to your creative replies.

justDIY · 23rd December 2006, 02:28 AM

even the smartest of smart chargers will eventually damage a battery ... I recharge my phone when it needs it, and usually remove it when it reports full

maybe the dude's phone battery was dying so quickly because he is a subject of wireless bugging, or maybe his fuel-gauge chip is dead or needs to be re calibrated.

biggest mistake is going to the OEM for a replacement ... talk about paying top dollar, shop around a bit and save 50-75%

sam2 · 23rd December 2006, 05:16 AM

The info in the article is anecdotal. Lithium batteries have a finite life, and will lose capacity steadily as they are charged/ discharged over that life(usually 2-3 years of steady phone use).
They are very dangerous if not properly charged,(charging over 1C,voltage over 4.2 or even discharged well below 3 volts) and can ignite and burn just like an incendiary device.
If people were damaging the batteries by over charging them you would be having FIRES!! not low capacity. The charging circuits in the phone protect/prevent the batteries from high/ low voltage/ high current.
With all the junk cell phones are asked to do now,(load on the battery) no wonder people preceive the batteries as no good.

Sceadwian · 23rd December 2006, 07:11 AM

I've had a battery last 3 years (in a city situation where toweres were nearby) because (regardless of how long I left it on the charger) whne it wasn't on the charger it was within a 1/4 mile or less of a tower, and so using a tiny amount of transmit power. In an issolatated situation, where perhaps the nearest tower might be 2 or 3 miles away you draining 3 times the current on a regular basis, the battery isn't going to last as long.. You'd be surprised how much just putting your cell phone in the wrong spot can drain your battery as opposed to an in the clear broadcasting position

Sceadwian · 23rd December 2006, 07:15 AM

A poorly designed battery in a poorly designed phone put in a poorly chosen position could literlaly kill itself, easily.

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23rd December 2006, 02:12 AM	(permalink)
klm	Cell Phone Charging - Interesting Find Fellow Engineers, I came across this interesting article across the internet and I personally think its completely false in this day and age. Please share your thoughts and lets have an interesting conversation here: http://www.gizmodo.com/gadgets/cellp...ght-223865.php Looking forward to your creative replies.

23rd December 2006, 02:28 AM	(permalink)
justDIY	even the smartest of smart chargers will eventually damage a battery ... I recharge my phone when it needs it, and usually remove it when it reports full maybe the dude's phone battery was dying so quickly because he is a subject of wireless bugging, or maybe his fuel-gauge chip is dead or needs to be re calibrated. biggest mistake is going to the OEM for a replacement ... talk about paying top dollar, shop around a bit and save 50-75% __________________ If you don't have a planet, what good are gold bars? want to contact me directly? gmail gordonthree check out my project website: http://projects.dimension-x.net Favorite numbers: 09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0

23rd December 2006, 05:16 AM	(permalink)
sam2	The info in the article is anecdotal. Lithium batteries have a finite life, and will lose capacity steadily as they are charged/ discharged over that life(usually 2-3 years of steady phone use). They are very dangerous if not properly charged,(charging over 1C,voltage over 4.2 or even discharged well below 3 volts) and can ignite and burn just like an incendiary device. If people were damaging the batteries by over charging them you would be having FIRES!! not low capacity. The charging circuits in the phone protect/prevent the batteries from high/ low voltage/ high current. With all the junk cell phones are asked to do now,(load on the battery) no wonder people preceive the batteries as no good.

23rd December 2006, 07:11 AM	(permalink)
Sceadwian	I've had a battery last 3 years (in a city situation where toweres were nearby) because (regardless of how long I left it on the charger) whne it wasn't on the charger it was within a 1/4 mile or less of a tower, and so using a tiny amount of transmit power. In an issolatated situation, where perhaps the nearest tower might be 2 or 3 miles away you draining 3 times the current on a regular basis, the battery isn't going to last as long.. You'd be surprised how much just putting your cell phone in the wrong spot can drain your battery as opposed to an in the clear broadcasting position __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har."

23rd December 2006, 07:15 AM	(permalink)
Sceadwian	A poorly designed battery in a poorly designed phone put in a poorly chosen position could literlaly kill itself, easily. __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har."